Nissan Terrano r20e. Manual — part 27
14. A/T Does Not Shift: D
3
→
D
4
SYMPTOM:
I
A/T does not shift from D
3
to D
4
at the specified speed.
I
A/T must be warm before D
3
to D
4
shift will occur.
Are 10. Vehicle Does Not Creep Forward
In “D”, “2” Or “1” Position and 11. Vehicle
Cannot Be Started From D
1
OK?
Yes
E
No
Go to 10. Vehicle Does
Not Creep Forward In “D”,
“2” Or “1” Position and 11.
Vehicle Cannot Be Started
From D
1
Does self-diagnosis, after cruise test,
show damage to any of the following
circuits?
I
Park/neutral position switch
I
Overdrive control switch
I
A/T fluid temperature sensor
I
Vehicle speed sensor
⋅
A/T (Revolu-
tion sensor)
I
Shift solenoid valve A or B
I
Vehicle speed sensor
⋅
MTR
No
E
Yes
Check damaged circuit.
Refer to AT-50, AT-54,
AT-63, AT-66 or AT-88.
Check throttle (accelerator) position sen-
sor. Refer to EC section [TROUBLE
DIAGNOSIS FOR “THROTTLE (ACCEL)
POSI SEN”].
OK
E
NG
Repair or replace throttle
(accelerator) position sen-
sor.
1. Remove oil pan.
2. Check A/T fluid condition.
OK
E
NG
1. Remove control valve
assembly. Refer to
AT-113.
2. Check the following
items:
I
Shift valve B
I
Overrun clutch control
valve
I
Shift solenoid valve B
I
Pilot valve
I
Pilot filter
3. Disassemble A/T.
4. Check the following
items:
I
Servo piston assembly
I
Brake band
I
Torque converter
I
Oil pump assembly
1. Remove control valve assembly. Refer
to AT-113.
2. Check the following items:
I
Shift valve B
I
Overrun clutch control valve
I
Shift solenoid valve B
I
Pilot valve
I
Pilot filter
OK
F
OK
Check again.
OK
E
NG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
INSPECTION END
SAT833HA
NAT262
SAT171B
H
H
H
H
H
H
H
DIAGNOSTIC PROCEDURES FOR SYMPTOMS
AT-105
15. A/T Does Not Perform Lock-up
SYMPTOM:
A/T does not perform lock-up at the specified speed.
Does self-diagnosis show damage to
torque converter clutch solenoid valve
after cruise test?
No
E
Yes
Check torque converter
clutch solenoid valve.
Refer to AT-72.
Check throttle (accelerator) position sen-
sor. Refer to EC section [TROUBLE
DIAGNOSIS FOR “THROTTLE (ACCEL)
POSI SEN”].
OK
E
NG
Repair or replace throttle
(accelerator) position sen-
sor.
1. Remove control valve. Refer to AT-113.
2. Check following items:
I
Torque converter clutch control valve
I
Torque converter relief valve
I
Torque converter clutch solenoid valve
I
Pilot valve
I
Pilot filter
OK
E
NG
Repair or replace dam-
aged parts.
Check again.
OK
E
NG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
INSPECTION END
SAT844H
NAT262
H
H
H
H
H
DIAGNOSTIC PROCEDURES FOR SYMPTOMS
AT-106
16. A/T Does Not Hold Lock-up Condition
SYMPTOM:
A/T does not hold lock-up condition for more than 36 seconds.
Does self-diagnosis show damage to
engine speed signal circuit after cruise
test?
No
E
Yes
Check engine speed sig-
nal. Refer to AT-80.
1. Remove oil pan.
2. Check A/T fluid condition.
OK
E
NG
1. Remove control valve
assembly. Refer to
AT-113.
2. Check the following
items:
I
Torque converter clutch
control valve
I
Pilot valve
I
Pilot filter
3. Disassemble A/T.
4. Check torque converter
and oil pump assembly.
1. Remove control valve assembly. Refer
to AT-113.
2. Check the following items:
I
Torque converter clutch control valve
I
Pilot valve
I
Pilot filter
OK
F
OK
Check again.
OK
E
NG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
INSPECTION END
17. Lock-up Is Not Released
SYMPTOM:
Lock-up is not released when accelerator pedal is released.
Does “ECU INPUT SIGNALS” in
Data Monitor show damage to closed
throttle position switch circuit?
----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------
Does self-diagnosis show damage to
closed throttle position switch circuit?
No
E
Yes
Check closed throttle posi-
tion switch. Refer to AT-88.
Check again.
OK
E
NG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
INSPECTION END
SAT835H
SAT171B
SAT146BA
H
H
H
H
H
H
H
DIAGNOSTIC PROCEDURES FOR SYMPTOMS
AT-107
18. Engine Speed Does Not Return To Idle
(Light Braking D
4
→
D
3
)
SYMPTOM:
I
Engine speed does not smoothly return to idle when A/T
shifts from D
4
to D
3
.
I
Vehicle does not decelerate by engine brake when turning
overdrive control switch OFF.
I
Vehicle does not decelerate by engine brake when shifting
A/T from “D” to “2” position.
Does self-diagnosis show damage to
overrun clutch solenoid valve circuit after
cruise test?
No
E
Yes
Check overrun clutch sole-
noid valve. Refer to AT-69.
Check throttle (accelerator) position sen-
sor. Refer to EC section [TROUBLE
DIAGNOSIS FOR “THROTTLE (ACCEL)
POSI SEN”].
OK
E
NG
Repair or replace throttle
(accelerator) position sen-
sor.
1. Remove oil pan.
2. Check A/T fluid condition.
OK
E
NG
1. Remove control valve
assembly. Refer to
AT-113.
2. Check the following
items:
I
Overrun clutch control
valve
I
Overrun clutch reducing
valve
I
Overrun clutch solenoid
valve
3. Disassemble A/T.
4. Check the following
items:
I
Overrun clutch assembly
I
Oil pump assembly
1. Remove control valve assembly. Refer
to AT-113.
2. Check the following items:
I
Overrun clutch control valve
I
Overrun clutch reducing valve
I
Overrun clutch solenoid valve
OK
F
OK
Check again.
OK
E
NG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
INSPECTION END
YAT338
NAT262
SAT171B
H
H
H
H
H
H
DIAGNOSTIC PROCEDURES FOR SYMPTOMS
AT-108
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